Übersetzung für "Inquiry signal" in Deutsch

In order to receive the response radio signal, the inquiry carrier signal must be broadcast continuously.

The control logic 6 is also supplied with a clock signal generated from the inquiry signal.

The Tandem Analysis serves the undelayed knowing value inquiry of a signal.

For essentially the entire communication between the base station and the transponder, the base station generates an inquiry signal.

The method of transferring data according to claim 1, wherein the inquiry signal is not modulated for 1.5 bit periods during the transmission of the terminator sequence.

The method of transferring data according to claim 1, wherein the inquiry signal is load-modulated for 1.5 bit periods during the transmission of the terminator sequence.

This method of the calibration is preferable particularly whenever a particular chronological behavior of the transponder is desired when the inquiry signal is turned on or when the transponder enters into an inquiry field.

Absolute-pressure sensors of said kind may be held in an active status continuously or periodically or may be activated only in case of an inquiry signal or instruction.

BACKGROUND OF THE INVENTION The invention relates to a method of transferring data from a transponder to a reading device in a scanning identification system by means of load modulation of an inquiry signal emitted by the reading device.

For example, the identification transmitter 9 is carried into a transmission and reception area of the recognition device 10 and receives with the transponder antenna an inquiry signal of the recognition device 10 and thereupon emits as a response signal to the recognition device 10 the identification code 2 stored in the memory of the transponder.

In the embodiment as stated the inventive apparatus 1 is configured such that the transmitting apparatus 7 transmits the operating state data in question only on inquiry after receipt of a corresponding inquiry signal via a telecommunications network (e. g. GSM) by using the transmitter 7 a .

Such components may be of a passive type in particular, i.e., those of a read-only nature, in particular those that can be read out wirelessly or that may be of an active type, i.e., those which can transmit information wirelessly to an external information processing unit, either transmitting it automatically or in response to an inquiry signal.

Such components may be in particular a passive type, i.e., those that are merely read out, in particular those that can be read out wirelessly, or they may be of an active type, i.e., those that can wirelessly transmit information to an external information processing unit either on their own or in response to an inquiry signal.

Such a diode is distinguished by a characteristic curve that is already essentially parabolic in the vicinity of the coordinate origin and is thus distinguished by a strongly nonlinear behavior, which leads to a mixing of the spectral components contained in the inquiry radio signal and thus to the generation of a spectral component with the frequency f M of the measurement signal at the output of the demodulation diode 2 .

During a brief time period [t 1, t 2], echoes in the inquiry radio signal, which have been thrown back by obstacles at various distances in the vicinity of the antenna 11 arrive at the antenna 11 .

After a brief further delay, at time t 5, a new operating cycle of the interrogation unit of the sensor begins with the renewed broadcasting of the inquiry radio signal.

Once the resonator has been excited to oscillate, the modulation of the inquiry radio signal is interrupted, and the pure, unmodulated inquiry carrier signal is broadcast.

Since the presence of the second resonator makes it possible to interrupt the broadcasting of the inquiry carrier signal when the response radio signal is to be received, it is possible to use the same antenna in the interrogation unit for sending the inquiry radio signal and receiving the response radio signal.

In the remote detection of a measurable variable using a sensor of the type described above, first its two oscillators are excited by an inquiry radio signal, which includes an inquiry carrier signal at a second frequency that is modulated with an inquiry measurement signal at a first frequency.

To perform a remote interrogation, the broadcasting of the total inquiry radio signal, both of the carrier and of the modulation, is interrupted, and a response radio signal broadcast by the sensor is intercepted, which includes a response carrier signal at the resonant frequency of the second oscillator, modulated with a response measurement signal at the resonant frequency of the first oscillator.

Since within this time no inquiry carrier signal can be broadcast, the background out of which the response radio signal has to be isolated is only slight, so that slight reception strengths are sufficient for satisfactory measurement.

Since within the time when the response radio signal is intercepted no inquiry radio signal can be broadcast, the same antenna can be used for both sending the inquiry radio signal and receiving the response radio signal, without the risk of crosstalk from the inquiry to the reception.